> > What is it in SD K/D that helps cats with their kidneys ? Does anyone
> > know ?
[quoted text clipped - 4 lines]
> food as well. You'll find folks arguing that cats need high protein
> food, no matter what their kidney condition is.
Actually the argument is nearly over. There have been two grade 1
Evidence based medicine clinical trials in naturally ocurring renal
failure in cats. In both clinical trials the results were unequivocal.
The second clinical trial will be published early next year by Polzin.
The only argument will be at what stage - 50, 70, 80% of kidney
destroyed, do we need to lower protein levels. Beynen will be
publishing a study early next year in Europe as well on the
_prevention_ of renal failure in cats based upon redution of protein
and phosphorus in the diet. That one ought to generate a lot of
controversy.
While it is correct that reduced phosphorus is key to the nutritional
treatment, it is a bit more complicated than that. N3 fatty acids,
sodium and potassium levels must also be taken into consideration.
> Hills products have a lot of grains and by-products in them, which I
> don't like, even though I buy this stuff for my CRF cat. However, I
> also offer better quality dry food, as I have three other cats. If my
> CRF cat eats the better food, so be it. Hope this helps,
>
> dragon
Bear in mind that adding any other food to a CRF cats diet will
inevitably add excessive phosphorus and could shorten the life
expectancy of the cat under treatment. Polzin's study, and the study
undertaken in England are both very clear on the reduction in life
expectancy from feeding a "typical pet food".
"On average, the survival time from diagnosis is 8 months without
dietary treatment and 20 months when an appropriate kidney diet is
fed. A prospective study with canine CRF patients provided evidence
that the feeding of a renal food instead of a maintenance food may
reduce renal mortality." (Jacob, et al., 2002).
B. Peg - 05 Nov 2004 15:11 GMT
Interesting info Steve. In our case (canine), once CRF was detected and the
diet changed, the dog lived for one year. Nothing appeared out of the norm
then (this test was more of a senior dog check-up at the time), however, the
kidney panel showed increased levels. So we switched to K/D. Dog lived for
one year.
Friend's dog was late diagnosed with CRF. Once the switch was made to K/D,
the dog lived for only 3 months. She never deviated from the K/D diet.
In our case, we mistakenly gave the dog Greenies as the vet said they would
be okay (!). Upon reading their label we were disturbed that the protein
was so high (92% as I recall). The vet made an abrupt change and said "No
Greenies" anymore. All food from then on was 8% or less (Nutra's Lamb/Rice
was around 7% or so) protein.
I don' know why, but it seems that we accidentally gave far more protein to
our dog than our friend did to her dog, but our dog lived much longer.
Maybe her late diagnosis?
B~
Steve Crane - 06 Nov 2004 03:56 GMT
> Interesting info Steve. In our case (canine), once CRF was detected and the
> diet changed, the dog lived for one year. Nothing appeared out of the norm
[quoted text clipped - 16 lines]
>
> B~
There will always be individual cases that stray from the "average".
There are people who smoked 3 packs of camels and lived into thier
80's. It is for this reason that studies of this nature must have more
than one or two animals in the study. There is a statistically minimum
number.
I'm a bit curious about the 8%, 7% protein Nutro products. I suspect
those were canned products and the percentages you've given are the
guaranteed analysis levels. All such values must be converted to dry
matter basis. While it isn't very accurate to convert guaranteed
values which are always expressed as minimums or maximums, you can
still get some idea of the actual dry matter values. Guaranteed values
like minimum 8% protein mean a food could contain 8% protein or 15%
protein, you really don't know. If we assume it is the 8% value and
then convert that to dry matter you get a quite different picture.
I don't know what the moisture content is for the Nutro canned
products but if we use an common industry value of 75% moisture - that
8% protein value works out to 32% protein on a dry matter basis. If
the moisture level is actually higher the protein expressed in dry
matter values would go up further.
Brandy??Alexandre - 05 Nov 2004 23:36 GMT
Steve Crane <eodemolay@cox.net> wrote in rec.pets.cats.health+behav:
> "On average, the survival time from diagnosis is 8 months without
> dietary treatment and 20 months when an appropriate kidney diet is
> fed. A prospective study with canine CRF patients provided evidence
> that the feeding of a renal food instead of a maintenance food may
> reduce renal mortality." (Jacob, et al., 2002).
We seem to have beaten those odds so far. Kami was diagnosed August
2001.

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Brandy??Alexandre?
http://www.swydm.com/?refer=BrandyAlx
Well, would you?